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' 23 June 2003 AGE-NC Project No 00-0769 ' Page 10 of 13 - BTEX compounds were detected In all samples except MW-8B at maximum concentrations of ` 3,500 µg/1 benzene, 640 µg/1 toluene, 500 µg/1 ethylbenzene and 2,600 µg/1 xylenes, in sample MW-3A The fuel oxygenates 1,2-DCA and TBA were detected in HU-2 samples 1,2-DCA was detected in samples MW-4B, MW-5B and MW-9B at concentrations ranging from 0 68 µg/1 (MW-9B) to ' 83 µg/1 (MW-4B) TBA was detected only in sample MW-4B at a concentration of 220 µg/1 In addition, ethanol was detected 1n sample MW-4B at a concentration of 900 µg/1 HU3 ' Ground water samples from"C" wells MW-4C through MW-9C were collected from HU3 TPH-g was detected In samples MW-4C and MW-5C at concentrations of 2,200µg/1 and 1,000µg/l, ' respectively BTEX compounds were detected in all samples except MW-8C at maximum concentrations of 770 µg/1 benzene and 200 µg/1 toluene in sample MW-4C, and 8 4 µg/1 ethylbenzene and 31 µg/1 xylenes in sample MW-5C ' The fuel oxygenates 1,2-DCA and TBA were detected in HU-3 samples 1,2-DCA was detected in samples MW-4C and MW-5C at concentrations of 61 µg/1 and 42 µg/1, respectively TBA was detected in samples MW-4C and MW-5C at concentrations of 180 µg/l and 170 µg/1, respectively tIn addition, ethanol was detected in sample MW-4C at a concentration of 2,500 µg/1 HU4 r { ' Ground water samples from"D" wells MW-4D through MW-9D were collected from HU4 4 TPH-g was detected In samples MW-4D through MW-7D at concentrations ranging between " ' 110 µg/1 (MW-6D) and 2,300 µg/1 (MW-4D) , BTEX compounds were detected in all samples except MW-8D at maximum concentrations of 3 ' 900 µg/1 benzene In MW-4D and 280 µg/l toluene, 11 µg/1 ethylbenzene and 39 µg/1 xylenes in sample MW-5D , ' The fuel oxygenates 1,2-DCA and TBA were detected in HU-4 samples 1,2-DCA was detected in samples MW-4D and MW-5D at concentrations of 110 µg/1 and 89 µg/1, respectively TBA was Advanced GeoEnvironmental,Inc